Multiple correct answers type
Two rough blocks A and B placed over B, move with acceleration ${¯ ¯ ¯ a}_{A}$ and ${¯ ¯ ¯ a}_{B}$ , velocities ${¯ ¯ ¯ v}_{A}$ and ${¯ ¯ ¯ v}_{B}$ by the action of horizontal forces ${¯ ¯¯ ¯ F}_{A}$ and ${¯ ¯¯ ¯ F}_{B}$ , respectively. When no friction exists between the blocks A and B,
a. $v_{A} = v_{B}$
b. $a_{A} = a_{B}$
c. Both (a) and (b)
d. $\frac{F_{A}}{m_{A}} = \frac{F_{B}}{m_{B}}$

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct options are
A a
B b
C c
D d

Suggest Corrections

Similar questions

When M.V.T is verified for f(x) on [a, b] then there exists c such that

Q. Multiple correct answers type
Two blocks A and B masses

m_{A}

and

m_{B}

have velocity v and 2v, respectively, at a given instant A horizontal force F acts on the block A. There is no friction between ground and block B and coefficient of friction between A and B is

μ

. The friction
a. On A supports its motion.
b. On B opposes its motion relative to A.
c. On B opposes its motion.
d. Opposes the motion of both.

A 2 kg block is placed over a 4 kg block and both are placed on a smooth horizontal surface. The coefficient of friction between the blocks is 0.20. Find the acceleration of the two blocks if a horizontal force of 12 N is applied to the upper block. Take g = 10 $m / s^{2}$ .

A plank of mass 10 kg rests on a smooth horizontal surface.Two blocks A and B of masses m_a = 2 kg and m_b =1 kg lies at a distance of 3 m on the plank. The friction coefficient between the blocks and plank are f_a=0.3 and f_b=0.1.Now a force F=15 N is applied to the plank in horizontal direction.Find the time (in sec) after which block A collides with B.

Q. Two blocks